Properties of the Number 13558

Thirteen Thousand Five Hundred Fifty-Eight

Basics

Value: 13557 → 13558 → 13559

Parity: even

Prime: No

Previous Prime: 13553

Next Prime: 13567

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 6779

Divisors: 1, 2, 6779, 13558

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11010011110110

Octal: 32366

Duodecimal: 7A1A

Hexadecimal: 34f6

Square: 183819364

Square Root: 116.43882514007088

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Shifts left 2 places under the "BIK" (reversible, indistinct, unlabeled) transform with a(1) = a(2) = 1. A32131

Floor( e * (3/2)ⁿ ). A81225

Sequence defined by the recurrence formula a(n+1)=sum(a(p)*a(n-p)+k,p=0..n)+l for n>=1, with here a(0)=1, a(1)=0, k=-2 and l=0. A177110

Total number of divisors d of m (counted with multiplicity), such that the prime signature of d is a partition of four and m runs through the set of least numbers whose prime signature is a partition of n. A309919

Total number of divisors d of m (counted with multiplicity), such that the prime signature of d is a partition of ten and m runs through the set of least numbers whose prime signature is a partition of n. A309925

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 499", based on the 5-celled von Neumann neighborhood. A272562

Numbers k such that F(k)*F(k+1) + F(k+2) is a prime, where F = A000045 (Fibonacci numbers). A305414

E.g.f. -log(sech(x) - log(x+1)). A13558